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    GeForce GT 640 vs Radeon HD 7660G plus HD 7670M Dual Graphics

    If you are going to buy a new graphics card and are choosing between GeForce GT 640 and Radeon HD 7660G plus HD 7670M Dual Graphics, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GT 640 stacks up against Radeon HD 7660G plus HD 7670M Dual Graphics, check out specs charts below.
    GeForce GT 640 Check Price
    Radeon HD 7660G plus HD 7670M Dual Graphics Check Price

    Radeon HD 7660G plus HD 7670M Dual Graphics is a Laptop Graphics Card

    Note: Radeon HD 7660G plus HD 7670M Dual Graphics is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with Radeon HD 7660G plus HD 7670M Dual Graphics here:

    Radeon HD 7660G plus HD 7670M Dual Graphics Laptops

    Main Specs

      GeForce GT 640 Radeon HD 7660G plus HD 7670M Dual Graphics
    Power consumption (TDP) 65 Watt
    Interface PCIe 3.0 x16
    Supplementary power connectors None
    Memory type DDR3 DDR3,GDDR5
    Maximum RAM amount 2 GB
    Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort
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    • GeForce GT 640 is used in Desktops, and Radeon HD 7660G plus HD 7670M Dual Graphics - in Laptops.
    • GeForce GT 640 is build with Kepler architecture, and Radeon HD 7660G plus HD 7670M Dual Graphics - with Terascale 2.
    • Core clock speed of GeForce GT 640 is 217 MHz higher, than Radeon HD 7660G plus HD 7670M Dual Graphics.
    • GeForce GT 640 is manufactured by 28 nm process technology, and Radeon HD 7660G plus HD 7670M Dual Graphics - by 40 / 32 nm process technology.
    • Memory clock speed of Radeon HD 7660G plus HD 7670M Dual Graphics is 18 MHz higher, than GeForce GT 640.

    Game benchmarks

    high / 1080p 2−3 1−2
    ultra / 1080p 1−2 0−1
    QHD / 1440p 0−1 0−1
    low / 720p 14−16 12−14
    medium / 1080p 5−6 3−4
    The average gaming FPS of GeForce GT 640 in Assassin's Creed Odyssey is 16% more, than Radeon HD 7660G plus HD 7670M Dual Graphics.

    Full Specs

      GeForce GT 640 Radeon HD 7660G plus HD 7670M Dual Graphics
    Architecture Kepler Terascale 2
    Code name GK107
    Type Desktop Laptop
    Release date 5 June 2012 15 May 2012
    Pipelines 384 862
    Core clock speed 902 MHz 685 / 600 MHz
    Transistor count 1,270 million
    Manufacturing process technology 28 nm 40 / 32 nm
    Texture fill rate 28.86
    Floating-point performance 692.7 gflops
    Length 145 mm
    Memory bus width 128 Bit 128 Bit
    Memory clock speed 1782 MHz 1800 MHz
    Memory bandwidth 28.51 GB/s
    Shared memory -
    DirectX 12 (11_0) DirectX 11, Shader 5.0
    Shader Model 5.1
    OpenGL 4.6
    OpenCL 1.2
    Vulkan 1.1.126
    CUDA 3.0
    Bitcoin / BTC (SHA256) 24 Mh/s
    Laptop size medium sized
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